ClickHouse/src/Common/renameat2.h

#pragma once
#include <string>


namespace DB
{

/// Returns true, if the following functions supported by the system
bool supportsRenameat2();

/// Atomically rename old_path to new_path. If new_path exists, do not overwrite it and throw exception
void renameNoReplace(const std::string & old_path, const std::string & new_path);

/// Atomically exchange oldpath and newpath. Throw exception if some of them does not exist
void renameExchange(const std::string & old_path, const std::string & new_path);

/// Returns false instead of throwing exception if renameat2 is not supported
bool renameExchangeIfSupported(const std::string & old_path, const std::string & new_path);

}